+380 50 364 66 46 Mon–Fri 8:00–17:00 Kyiv time Wishlist0 Compare0
Prices are in euros. The final price and delivery cost are confirmed in the quote.
Drawing of 1203: ⌀17 × ⌀40 × 12 mm⌀40⌀17121203
Fig. 1: 1203, end view and section; internal parts simplified per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 1203

Load: radial medium; axial low, on both sidesSelf-aligning ball

Bearing CT 1203

€0.43per piece
In stock: 254 pcs
Request a quote

Specifications

Manufacturer number
Equivalents
5 exact, 2 approximate
d
17 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
40 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
B
12 mm
Width BRing width. Source: two supplier sources
Seal
open, no protection
Clearance
normal clearance
C
8.84 kN
Basic dynamic load rating CLoad for one million revolutions at 90 % reliability; the L10 life is calculated from it as (C/P)^p. ISO method, manufacturer’s figure: do not carry it over to another brand. Source: supplier data
C0
2.2 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
m
0.073 kg
MassWeight of the product. Source: supplier data
01

Equivalents

the same size 17 × 40 × 12 from other brands

8 products
Series illustration (not a photo of this item): 1203
You are viewingCT 1203
€0.43baseline for the price comparison

Everything the number specifies matches: series 12, 17 × 40 × 12 mm, open, no protection, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the CT catalogue.

  • Series illustration (not a photo of this item): 12031203This bearingCT17 × 40 × 12254 pcs€0.43you are here
  • Series illustration (not a photo of this item): 12031203KG17 × 40 × 12130 pcs€0.86+€0.43Request a quote
  • Series illustration (not a photo of this item): 12031203Koyo17 × 40 × 12available to orderon requestRequest a quote
  • Series illustration (not a photo of this item): 12031203NACHI17 × 40 × 12available to orderon requestRequest a quote
  • Series illustration (not a photo of this item): 12031203NTE17 × 40 × 12available to orderon requestRequest a quote

Under the price: the difference from the price of this bearing (€0.43).
02

Details

what this bearing is, questions

About the bearing

d×D×Bsize 17 × 40 × 12mm
Cdynamic 8.84kN
C0static 2.2kN
mweight 0.073kg

Self-aligning ball bearing 1203. Under GOST the same bearing is designated 1203.

C, C₀, m: CT data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 1203?

It is the same bearing under GOST 3189-89: 1203 corresponds to the ISO base 1203. Size 17 × 40 × 12 mm, a full equivalent of 1203.

Can I fit another brand instead of this bearing?

Without checking, only an exact equivalent: the size, seal, clearance and design match according to the brand’s catalogue. Positions with the same geometry differ in seal, clearance or design, and each one says so in the equivalents block. Load ratings differ between manufacturers, so for a heavily loaded unit compare C.

How do I get a price and a lead time?

Press “Request a quote” and send the part number and quantity. We reply with the price, availability and delivery terms for your country.

03

Reviews

No reviews yet